CAJ | 학술논문

提出了一种新型增压富氧焚烧垃圾近零排放电站的设计概念,采用液态排渣增压垃圾焚烧锅炉,增加制氧装置与烟气压缩净化回收系统.以日焚烧1100 t 城市垃圾的汽轮机发电机组为例,计算了炉膛压力分别为0．5,1．0,1．5 MPa下发电机组的经济性,并与常压富氧焚烧技术进行对比.结果表明：由于锅炉炉膛压力增高,烟气中水蒸气的凝结热可用于加热汽轮机低温凝结水,减少汽轮机抽汽量,增加汽轮机发电功率,发电机组输出功率可达到25 MW左右；空气分离制氧电耗约占发电量的34％,CO2压缩电耗占发电量的5％,低于常压富氧焚烧.综合考虑电站其他辅机电耗后,0．5~1．5 MPa 炉膛压力下的增压富氧焚烧垃圾发电机组的净效率可提高9．31％~9．90％.
제출료일충신형증압부양분소랄급근령배방전참적설계개념,채용액태배사증압랄급분소과로,증가제양장치여연기압축정화회수계통.이일분소1100 t 성시랄급적기륜궤발전궤조위례,계산료로당압력분별위0．5,1．0,1．5 MPa하발전궤조적경제성,병여상압부양분소기술진행대비.결과표명：유우과로로당압력증고,연기중수증기적응결열가용우가열기륜궤저온응결수,감소기륜궤추기량,증가기륜궤발전공솔,발전궤조수출공솔가체도25 MW좌우；공기분리제양전모약점발전량적34％,CO2압축전모점발전량적5％,저우상압부양분소.종합고필전참기타보궤전모후,0．5~1．5 MPa 로당압력하적증압부양분소랄급발전궤조적정효솔가제고9．31％~9．90％.
A novel design concept for pressurized oxygen-enriched waste incineration power plant with near-zero emission was proposed,in which the slag-tap pressurized waste incineration boiler was applied,and the oxygen production and flue gas compression purification and recovery system were added.Taking a waste incineration turbine-generator unit which consumes municipal waste of 1 100 t each day as the research ob-ject,the technical and economic analysis was carried out for the unit at pressure of 0.5 MPa,1.0 MPa and 1 .5 MPa,and the results were compared with that of the atmospheric pressure oxy-fuel combustion.It shows that,under pressurized oxygen-enriched combustion condition,since the systematic pressure in-creased,the latent heat of steam in flue gas can be recovered to heat the low pressure condensate in steam turbine,thus to reduce the steam extraction and increase the turbine power output.As a results,the gross unit power output reached 25 MW.The power consumption of air separation unit (ASU)rose,which ac-counted for about 35% of the power generation,and that of the compression and purification unit (CPU) reduced,which accounted for about 5% of the power generation,both were lower than that of the atmos-pheric pressure oxygen-enriched combustion.Considering other auxiliary power consumptions,the overall net unit efficiency at pressure from 0.5 MPa to 1.5 MPa of the oxygen-enriched combustion was enhanced by about 9 .3 1% to 9 .9%.